TIF: handle a race condition when a session is crashed

Currently, TIMS has a logic for handling session crash (binderDied).
However, this can be racy if the client calls an operation right before it gets
ITvInputClient.onSessionReleased() callback. This change handles those request
gracefully without causing a crash in the client side.

Bug: 18612616
Change-Id: I37241e05d53f3cca693e0239fc9ad5dce02fc925